lift them up...lol...
but seriously letting her/him know first the reason y she/he's upset or feeling down
so that he/she could realize if that is worth for her/his time...lol...
and i will advice her depends on wat the situation is...^^

When my friend is feeling down... I ask her first what the problem is and try to give her advice the best way I can... But if she refuse to say I won't force her... let her open up... just stay by her side... when they are crying I always give them a hug... >:D<

Well, i ask my friend what's letting her down but if she doesn't want to tell, then i won't force her to but if she wants to tell me then i'm always there for her and will hear everything she's going to say to me....there must be trust between us if she's willing to tell me...